Comentarii la: Reguli încălcate, bărci încălcate + tehnologie nouă

De: Free Access

Free Access — Sun, 11 Dec 2022 03:12:05 +0000

Rob's theory makes absolute sense. Simple is better and all of the micro adjustments to foil flaps add drag which can slow you down. The flap fights the directional forces of the main foil to some degree, why not keep the flaps straight and just use the whole foil to change the forces as needed.

De: Diogo Nunes

Diogo Nunes — Sun, 11 Dec 2022 00:47:45 +0000

It is certainly possible to fly those boats without flaps, however, not having flaps will make the high speed pitch adjustments (the now typical bow down high speed foiling) much more difficult, if not limit it altogether, so I heavily doubt that they don't have the flaps.
It also seems that whilst under loading the foil might straighten up quite a bit making the hinge much less of a problem, this would also mean the foil can be made thinner, though you can't just fully rely on the foil bending as it might induce the equivalent of undesirable aeroelastic effects

De: Mark Nicol

Mark Nicol — Sun, 11 Dec 2022 00:20:15 +0000

Last cup you showed data from Etnz showing how they used the foil as they did the JK which was far quicker .
Good theory.
Are the wings aloud to move in and out to increase/decrease curvature,eliminating the use of flaps.??

De: A R

A R — Sat, 10 Dec 2022 22:59:43 +0000

Great stuff guys!

De: Peter Pengilly

Peter Pengilly — Sat, 10 Dec 2022 22:28:07 +0000

Its not that difficult to move a flap on a bent wing – take a look at a high performance glider. Sealing the hinge line may be a challenge and is definitely required. That's not to say I disagree with Rob! Interesting to see where this all ends up. But what is the advantage of a curved foil over a straight one? Why would you give up the ability to adjust the flap on a trials boat – even if it wasn't used very often why give up that facility. Would also be interesting to know more about why a self tacking jib might be desirable when there is a boat full of people to do the job. Could you also recap on what the AC40s are for?

De: Antipodean33

Antipodean33 — Sat, 10 Dec 2022 20:45:23 +0000

Can't watch this, sat through 1 advert for a minute and a half only to be thrown another one which lasts almost 3 minutes???? WTF is this shit

De: Chris Sayer

Chris Sayer — Sat, 10 Dec 2022 19:07:26 +0000

Only problem I see with Robs no flap theory is that I think that the flaps are not so much for ride height but for changing foil shape from low speed high lift to high speed low drag/cavitation.

De: Steve Bloxham

Steve Bloxham — Sat, 10 Dec 2022 18:53:02 +0000

The worry for Ineos must be Mercedes track record of producing a complete lemon when trying to interpret a new formula.

De: Peter Worcester

Peter Worcester — Sat, 10 Dec 2022 18:52:34 +0000

I can't really say that I disagree with Rob's theory I mean it kind of makes sense, at least to explore.

De: Timothy Zimmermann

Timothy Zimmermann — Sat, 10 Dec 2022 16:09:57 +0000

I wonder if the foil could be engineered such that the C shape's deflection under load twists the flap upward. On takeoff i assume most of the load is vertical, so you could design under the assumption that a 7t load should have the foil in high lift mode and any load beyond that would be the foil resisting leeway. The foil could use deflection to bend into a less draggy shape at that point.